Sleep-wake cycle impairment adding on the risk for COVID-19 severity in people with diabetes

In the present article, we explore the risks of circadian disruptions and impact on the sleepwake cycle of individuals with diabetes during COVID-19 pandemic. The association between the duration and quality of sleep and the stability of glucose levels is well-established. Therefore, during the pandemic with changes and limitations in the exposure to cyclic cues that entrain the circadian rhythms, such as light-dark and social interactions, we hypothesize that the power and stability of circadian rhythms decrease if measures are not taken to intentionally create a routine that includes zeitgebers. Knowing that sleep-wake cycle disruptions impair melatonin production, immune system response and glucose metabolism, and that individuals with diabetes are at higher risk for poor prognosis when infected by SARS-CoV-2 (especially if their blood glucose is out of target), we recommend monitoring and advising these individuals towards strategies to maintain adequate sleep quality and duration as part of their preventive and protective measures during the new pandemic routine.